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Arte-miy333 [17]
3 years ago
9

Houston Elementary School is selecting students to be in the winter festival show. There are 4 roles left but there are 12 stude

nts interested in the roles. How many combinations of the twelve students can be chosen for the four remaining roles? A. 505 B. 495 C. 48 D. 16
Mathematics
2 answers:
elena-s [515]3 years ago
7 0
It's C. 48. Hope this helps. Why does my answer have to be long? Now THAT I will never know.
VikaD [51]3 years ago
5 0
The correct answer is C. 48
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Is 2/3 equal to 2/4 ? if not is it greater
Dimas [21]

Answer:

Equivalent fraction of a given fraction is got by multiplying or dividing its numerator and denominator by the same whole number. For example, if we multiply the numerator and denominator of 2/3 by 4 we get. 2/3 = 2×4 / 3×4 = 8/12 which is an equivalent fraction of 2/3.

Step-by-step explanation:

5 0
2 years ago
On Rocko's 6th birthday, he was 3 feet, 10 inches. On Rocko's 11th birthday, he was 4 feet, 8 inches, How many inches per year w
enyata [817]
2 inches per year bc it’s over 5 years and he grew 10 inches and 10/5 is 2
5 0
3 years ago
What is 36:12 as a fraction in lowest terms?
Rom4ik [11]
Did you mean 36/12? If so the answer would be 3/1 or 3.
3 0
3 years ago
The average age of all students at a certain college is 22 years and the standard deviation is 2 years. What is the probability
Marianna [84]

Answer:

The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159

Step-by-step explanation:

According to the given data we have the following:

mean = μ= 22

standard deviation = σ = 2

n = 100

μx = 22

σx=σ/√n=2/√100=0.2

Therefore, P( x < 21.8)=P(x-μx)/σx<(21.8-22)/0.2

=P(z<-1)

= 0.159

The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159

3 0
3 years ago
Jake is building a fence around his property. He wants the perimeter to be no more than 100 feet. He also wants the length to be
emmasim [6.3K]

Answer:

C. 20 feet

Step-by-step explanation:

Let x = width

Let y = length

If the length is at least 10 feet longer than the width:

⇒ x + 10 ≤ y

⇒ x ≤ y - 10

If the perimeter is to be no more than 100 ft:

⇒ 2x + 2y ≤ 100

⇒ x + y ≤ 50

⇒ x ≤ 50 - y

Equate the equations for x and solve for y:

⇒ y - 10 = 50 - y

⇒ 2y = 60

⇒ y = 30

Substitute found value of y into one of the inequalities for x:

⇒ x ≤ 30 - 10

⇒ x ≤ 20

Therefore, the maximum possible width of the fence is 20 feet.

8 0
2 years ago
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